Feature: 1. DUAL MICROPHONE INPUT: Karaoke reverberator dual microphone input, through the 1/4in microphone input and output to mix the sound signal to the TV, home theater system or other sound system, the volume can be adjusted individually. 2. 5 ROTARYING DIALS: Karaoke reverber's simple interface features 5 rotarying dials to quickly adjust the volume of your music, microphone and sound to the level you want. You can set your own different parameters to reflect your specific style. 3. COMPATIBLE: Digital karaoke reverberator is compatible with TVs, disc players, desktop computers, laptops, tablets, smartphones, DVD players, home theater systems, receivers, speakers, and more. 4. SUITABLE SCENARIO: Karaoke mixer outputs mixed sound signal to TV or home theater system or other sound system. Perfect for DJ music, companies, stages, KTV rooms, home parties, etc. You can easily enjoy the fun of instant karaoke. 5. PORTABLE: Wireless karaoke mixer is portable, has a metal casing for toughness and reliability, and is small and lightweight, so you can take it anywhere and enjoy karaoke or speech in any occasion. Specification: Item Type: Karaoke Mixer Material: Aluminium Alloy Bluetooth Version: 5.0 Input Voltage: DC 12V Sound Input and Output: 3.5mm Stereo Coaxial Input Digital Reverb: Two Effect Modes, Support Dual Microphone Input, High and Low Sound Adjustment Sound Output Needs to be Connected to a Powered Speaker or Amplifier Jack Diameter: 6.5mm/0.26in. Package List: 1 x Karaoke Mixer1 x Antenna